JPS6214274A - Drawing input controller - Google Patents

Abstract

PURPOSE:To read correctly a drawing in any case of the positive and reverse setting directions of the drawing by providing a drawing input control device, respective parameter setting devices in the positive direction and in the reverse direction which set the parameter and the parameter selector which selects one of the directions. CONSTITUTION:A drawing input direction detecting part 44 and a parameter selecter 46 are added. The drawing input direction detecting part 44 decides the drawing input direction by the detecting mark provided at the space part on the drawing. The parameter selecter 46 is equipped with parameter setting devices 47a and 47b in the positive direction and in the reverse direction which sets the parameter corresponding to the drawing input direction at the address controller to give the two-dimensional scanning address to the linear scanner, and selects one side of the parameter setting devices 47a and 47b in accordance with the deciding output o the drawing input direction detecting part. Thus, the suitable parameter is automatically selected in accordance with the drawing input direction, the drawing can be inputted in any direction of the positive direction and the reverse direction, and the work efficiency of the drawing reading is improved.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a drawing input control device that inputs the same drawing data regardless of whether the drawing is inserted into a v-board device or in the reverse direction. .

[Technical background of the invention and its problems 1 The general configuration of the drawing reading device is shown in FIG.

In FIG. 8, a drawing reading device 110 is composed of an input section 1, a recognition section 2, an editing section 3, and an output section 4. A handwritten drawing written according to a certain rule is inserted into the input section 1, and the recognition section 2 The figures and symbols are recognized and output from the output section 4 in a predetermined format. The editing section 3 is a man-machine interface that processes recognition results in an interactive manner.

FIG. 9 shows the details of the input section 1 at 71. The scanner 11 is a sheet conveyance type glue scanner that scans the input drawing in two dimensions, and decomposes the scanned data into one-dimensional pixel data strings 13. , and transferred to the 1g identification unit 2 via the scanner interface 12.

FIG. 10 shows an example of the scanning method, and the input drawing 10
1 is scanned in two directions: horizontal direction (scanning) and vertical direction (sub-scanning).

The detailed configuration of the recognition unit 2 is shown in FIG.

The self-element data string l3 of the primary node c input from the input section 1 is sent to the frame memory 2 via the input section interface 20.
It is stored in 4. The storage address is generated by an ADC (address controller) 28 and controlled by a parameter setter 29.

The image stored in the frame memory 24 is stored in the symbol reflexizer 21 . Connection line analyzer 22, character recognizer 2
3, the nine characters of symbols and connecting lines are recognized, and the recognition results are stored in the data table 25.

26 and 27 are an editing section interface and an output section interface, respectively.

The frame memory 24 assigns one memory location to one pixel of the input drawing, and stores two-dimensional image data in which the pixel position and memory position are in one-to-one correspondence.
It is stored in pieces.

Generally, a frame memory for intermediate processing is required, and the recognition unit 2 usually has a plurality of frame memories.

The parameters set by the parameter setting device 29 are as follows, with the main scanning direction being the X axis and the sub scanning direction being the Y axis.

Start at L/X: ST (STX, Slo
V) Increment: DX, rlY Flyback lid: FX, FY Number of repetitions: Nx Number of flybacks - NY Figure 12 shows the configuration of AD028.

Each of the above parameters set by the parameter setter 29 is stored in the parameter register 30.

Address calculation is performed separately for the X-axis and Y-axis, and in the case of the X-axis, the above DX and FW are respectively I]x register 33
, and ADX adder 31 via FX register 41
The Cx counter 37 adds the current address Cx to the current address Cx, and outputs the result from the output section 43. 35 is an MPX multiplexer for inputting the start address STX, and the number of addresses within a scan is monitored by an NX counter 39.

The same applies to the Y axis, and the Cx counter 37 and C
CX and CY output from the Y counter 38 are output to the output section 43.
The NX counter 39 and NY counter 40 are reloaded from the parameter register 30 when they become negative values.

Generally, the drawing is rectangular, and when setting the drawing on the scanner 11, the drawing should be placed in the forward direction and in the reverse direction (180" from the forward direction.
’ rotation) are possible.

However, since the recognition unit 2 can generally recognize only one direction, it is necessary to reset it each time it is set in the opposite direction, which poses a problem of poor workability.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a drawing input control device that can read drawings correctly regardless of whether the drawings are set in the forward or reverse direction.

[Summary of the invention]

The present invention provides a drawing input control device for a drawing reading device that scans pixels on an input drawing two-dimensionally using a linear scanner and stores the scanned data in a frame memory, in which the drawing is detected by detecting marks provided in the margins on the drawing. a drawing input direction detection unit that determines the input direction; a forward direction and reverse direction parameter setter that sets parameters corresponding to the drawing input direction in an address controller that provides a two-dimensional scanning address to the linear scanner; It is equipped with a parameter selector that selects one of the above parameter setting devices according to the judgment output of the drawing input direction detection section, and this automatically selects the appropriate parameter according to the drawing input direction, so that one drawing can be moved in the forward direction or in the reverse direction. The work efficiency of the drawing reading device is improved by allowing input in any direction.

[Embodiments of the invention]

An embodiment of the present invention is shown in FIG.

1, compared to the conventional FIG. 11, a drawing input direction detection section 44 and a parameter selector 46 are added, and two parameter setting devices, a forward direction parameter setting device 47a and a backward direction parameter setting device 47b, are used. The rest is the same as the conventional figure 11.

To detect the input direction of the drawing, small detection marks 56a and 56b are provided on one side of the drawing paper in the upper and lower margins t of the paper, as shown in FIG.

When the drawing paper is set in the forward direction and input, the detection mark 56a (distance 14□ from the left end) is first scanned by the scanner 11, and binarized data as shown in the 31st time is given.

Similarly, if the drawing paper is set in the opposite direction and input, the detection mark 56b (distance l, 2 from the left end) is scanned and binarized data as shown in FIG. 4 is provided.

L, and 1. By providing a difference between the two directions, it is possible to identify whether the direction is forward or backward.

An example of the configuration of the drawing input direction detection section 44 is shown in FIG.

The pixel data for one line sampled and binarized by the scanner 11 is
It will look like the figure or Figure 4.

If the number of data in which the values of the binary data inputted through the binary data input section 51 continue with O is I7.1 and the number of data in which the value continues with 1 is Ω, then I4. Q is counted by an I counter 52 and a Q counter 53, respectively.

The counted I and Q are stored in parameter register 5.
I for the iE reverse direction set at 0, reference value L1,
1. ．． and Q reference value g□, respectively ■, comparator 54
and Q comparator 57 compare whether I4 is (,1 or [6□
At the same time, it is determined whether Q falls within the range of the reference value Q1, thereby determining the drawing input direction and outputting it via the drawing input H direction output section 55.

[If the comparison result of the 4 comparator 54 or the a comparator 57 is inappropriate, the error processing unit 56 performs error processing.

If the scan corresponding to the blank width t of the drawing paper is Mf, then t
This is detected by the Q counter 58, the detection mark detection routine is bypassed, and normal drawing reading begins.

That is, the parameter selector 46 is operated according to the determined drawing input direction, the parameter setter 478 or 47b corresponding to the drawing input direction is selected, and the drawing is read in the same procedure as in the conventional case of FIG. 11.

If the drawing input direction is the positive direction, the input parameters L7STtr (OO), IIX, n shown in FIG.
Let Y be a positive value, NX, NY be positive integers, FX, FY
Set L'K = -NX - DX, FY = DY, and construct the frame memory 24.

The range xn, y in the ν direction is x, = NX-11X, y,
=NY・! IY Tonal: NX, NY, DX,
Define DY.

As a result, Ar1C28 starts from (0, O), (0, 0), (work,, O), ..., (work □).

O)...(ENG., 0) is output. Here, xl=Eto, +DX is 11, and when it becomes =NX-DX, it is flyback and becomes (onyx). However, shi, =FY.

When the above scan in the positive direction and flyback in the ν direction are repeated, the data changes as follows: 5 = shi, -, 10Fy, and in the end, the pixel data from (0, 0) to (X□, shi) is sequentially changed. It is stored in the frame memory 24.

If the drawing input direction is the opposite direction, press S as shown in Figure 7.
T is (Xn+klJ+DX+DY is a negative value, NX,
Let NY be a positive integer, FX=NX-rTV, FY=
DY.

As a result, the ADC 28 starts from (Ine ν,) and performs raster scanning in the reverse direction to (χ,).

ν, ), (In-xvW,)t..., (Engl, C,
Instep.

Outputs the address of (0, ν,). However, xl=xl
◆, 10DX.

When E1=0, it flies back to (χ.+W am-+).

The above operation is repeated from (K., Hai,) to (0,0
”) are stored in the frame memory 24.

As a result, all pixel data is stored in the frame memory 24 in the forward direction, regardless of the drawing input direction.

Therefore, image processing functions such as figure recognition processing are performed properly regardless of the direction in which the drawing is input, and the speed of processing is improved.

In the above embodiment, detection pixels are used as detection marks in the drawing input direction, but it is also possible to use methods such as cutting off one of the four corners of the base paper or pasting a magnetic sticker.

〔Effect of the invention〕

As explained above, according to the present invention, when a drawing is input to a drawing reading device, appropriate pixel data is stored in the frame memory regardless of whether the drawing direction is reversed, and thereby the work vehicle for reading the drawing is directed. - A rational drawing input control device can be obtained.

[Brief explanation of drawings]

Figure 1 is a system diagram showing an embodiment of the present invention, Figure 2 is a diagram showing an example of a detection mark for detecting the drawing input direction, and Figures 3 and 4 show the drawing input direction being forward and reverse, respectively. FIG. 5 is a diagram showing an example of a specific circuit configuration of the drawing input direction detection section used in FIG. 1, and FIGS. FIG. 8 is a diagram showing a general configuration of a drawing reading device; FIG. 9 is a diagram showing details of the input section in FIG. 8. , FIG. 10 is a diagram showing the scanning direction of the drawing, and FIG. 11 is a diagram showing the conventional l! in FIG. 8. 12 is a diagram showing the configuration of Oribe, and FIG. 12 is a diagram showing the configuration of the address controller in FIG. 11. 1 Input section 2 Recognition section 3 Editing section 4 Output section 10 Drawing reading device 11 Scanner 12 Scanner interface 24 Frame memory 28 ADC (address controller) roller) 29
Parameter setter 44 Drawing input direction detection unit 46 Parameter selector 47a Forward parameter setter 47b Reverse parameter setter Agent Patent attorney Sho Inomata Hiroko Inomata

Claims (1)

[Claims] In a drawing input control device for a drawing reading device that scans pixels on an input drawing two-dimensionally using a linear scanner and stores it in a frame memory, the drawing input direction is determined based on detection marks provided in the margins of the drawing. a drawing input direction detection section for detecting the drawing input direction; a forward direction and reverse direction parameter setting device for setting parameters corresponding to the drawing input direction in an address controller that gives a two-dimensional scanning address to the linear scanner; and a drawing input direction detection section for the drawing input direction detection section. A drawing input control device comprising a parameter selector that selects one of the parameter setting devices according to a determination output.